72199700 has 18 divisors (see below), whose sum is σ = 156673566. Its totient is φ = 28879840.

The previous prime is 72199693. The next prime is 72199711. The reversal of 72199700 is 799127.

It can be written as a sum of positive squares in 3 ways, for example, as 7203856 + 64995844 = 2684^2 + 8062^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360899 + ... + 361098.

It is an arithmetic number, because the mean of its divisors is an integer number (8704087).

Almost surely, 2^72199700 is an apocalyptic number.

It is an amenable number.

72199700 is an abundant number, since it is smaller than the sum of its proper divisors (84473866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72199700 is a wasteful number, since it uses less digits than its factorization.

72199700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722011 (or 722004 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 72199700 is about 8497.0406613126. The cubic root of 72199700 is about 416.4010324661.

The spelling of 72199700 in words is "seventy-two million, one hundred ninety-nine thousand, seven hundred".